LPC55S2X datasheet(3/140 Pages) NXP

3 / 140 page

LPC55S2x/LPC552x

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Product data sheet

Rev. 2.2 — 8 December 2022

3 of 139

NXP Semiconductors

LPC55S2x/LPC552x

32-bit ARM Cortex-M33 microcontroller



Secured digital input/output (SD/MMC and SDIO) card interface with DMA support.

SDIO with support for up to two cards. Supported card types are MMC, SDIO, and

CE-ATA. Supports SD2.0, and SDR25 (52MHz).



CRC engine block can calculate a CRC on supplied data using one of three

standard polynomials with DMA support.



Up to 64 General-Purpose Input/Output (GPIO) pins.



GPIO registers are located on the AHB for fast access. The DMA supports GPIO

ports.



Up to eight GPIOs can be selected as pin interrupts (PINT), triggered by rising,

falling or both input edges.



Two GPIO grouped interrupts (GINT) enable an interrupt based on a logical

(AND/OR) combination of input states.



I/O pin configuration with support for up to 16 function options.



Programmable Logic Unit (PLU) to create small combinatorial and/or sequential

logic networks including state machines.



Security Features:



AES-256 encryption/decryption engine with keys fed directly from PUF or a

software supplied key



Secure Hash Algorithm (SHA2) module supports secure boot with dedicated DMA

controller.



Physical Unclonable Function (PUF) using dedicated SRAM for silicon fingerprint.

PUF can generate, store, and reconstruct key sizes from 64 to 4096 bits. Includes

hardware for key extraction.



True Random Number Generator (TRNG).



128 bit unique device serial number for identification (UUID).



Secure GPIO.



Timers:



Five 32-bit standard general purpose asynchronous timers/counters, which support

up to four capture inputs and four compare outputs, PWM mode, and external

count input. Specific timer events can be selected to generate DMA requests.



One SCTimer/PWM with 8 input and 10 output functions (including 16 capture and

match registers). Inputs and outputs can be routed to or from external pins and

internally to or from selected peripherals. Internally, the SCTimer/PWM supports 16

captures/matches, 16 events, and 32 states.



32-bit Real-time clock (RTC) with 1 s resolution running in the always-on power

domain. Another timer in the RTC can be used for wake-up from all low power

modes including deep power-down, with 1 ms resolution. The RTC is clocked by

the 32 kHz FRO or 32.768 kHz external crystal.



Multiple-channel multi-rate 24-bit timer (MRT) for repetitive interrupt generation at

up to four programmable, fixed rates.



Windowed Watchdog Timer (WWDT) with FRO 1 MHz as clock source.



The Micro-Tick Timer running from the watchdog oscillator can be used to wake-up

the device from sleep and deep-sleep modes. Includes 4 capture registers with pin

inputs.



42-bit free running OS Timer as continuous time-base for the system, available in

any reduced power modes. It runs on 32kHz clock source, allowing a count period

of more than 4 years.

LPC55S2X Datasheet(PDF) 3 Page - NXP Semiconductors

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